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Sends mail from this agent’s dedicated inbox address. On by default for new agents. The From address is the agent’s inbox and cannot be overridden. Use this when the task was triggered by inbound email and you need to reply.

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Authentication and enablement

The agent must have an inbox (agent_inboxes). No user Gmail OAuth — this is platform inbound mail, not gmail_send_email.

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Inputs

  • to (required): recipient addresses.
  • subject (required): for replies, Re: + original subject.
  • body (required).
  • body_type — html (default) or text.
  • cc, from_name, file_urls (attachments as ${VAR_N}) — optional.
  • reply_to_message_id / references — from the original email’s metadata to stay in-thread.

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Output

Send confirmation (message id / thread headers as returned by the mail path).

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Limits and side effects

  • Sends a real email from the agent’s inbox.
  • From address is fixed; from_name is display-only.

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Expected errors

  • Agent has no inbox.
  • Empty to, subject, or body.
  • Attachment URL unreadable.